Charles h



`0 H. MILLER. CURTAIN BDLLER.-

Patented Peb. 5, 1884.

wmu'uu. m Mmm nu uw mm UNITED STATES PATENT OFFICE.

cHARLEs H. MILLER, oE RDEEALO, NEW YORK, ASSIeNoR, EY DIREor AND MESNE ASSIGNMENTS, r ro EDWARD S. WARREN, oE SAME rLAcE.

CURTAIN-ROLLER.

SPECIFICATION forming part of Letters Patent No. 293,187, dated February 5, 1884.

` Application med Maren 12,1877. Renewed March 31, 1ero.

To all whom Lt may concern,.-

Vof@

Be it known that I, CHARLES H. MILLER, of the city of Buffalo, in the county of Erie and State of N ew York,'have invented certain new 'and useful Improvements in- Curtain-Rollers, which improvements are fully set forth in the .following specification, reference being had to the accompanying drawings.

My invention relates to that classmof curtainrollers which are provided with abore orcavi ty in which is arranged a Spiral Spring for automaticall y raising the curtain. These curtain-rollers are provided with a round bar or rod arrangedaxially Within the bore or cavity,

so as to form Vacore for the Spring. Previous to my'invention this round "bar or rod was Aformed separate from the curtain-roller, and

secured at its outer end to a flattened shank i held inone of the brackets,while the inner end turned in a bearing-block arranged at the inner end of the bore. This construction is objectionable, for the reasonthat wooden curtainrollers are frequently harder on one side than on the other, so that in boring the roller the auger will have a tendency to run toward the soft side of the roller, whereby the bore is apt to be out of center, and frequently so much so as to cause the roller to split. Furthermore,

`the wooden center bar turning in the bearingv vided with a bore,'B, in which is arranged the spiralspring c.

D represents the round bar or rod, arranged axially within the bore B, and secured with its inner end to the roller A, so as to turn there- With.

E is a metallic bearing arranged nearthe outer end of thebore B, so as to receive the end of the bar D.

e is the flattened shank, formed with the hollow auger cutting an annular recess. The i outer diameter of the auger is equal to the size ofthe bore, while the central opening of the auger corresponds with the thickness of the bar D. The latter forms a guide for the auger as the boring progresses, thereby preventing the auger from working toward one side of the roller and insuring perfect work being turned out in all cases. one piece with or secured to the roller A, the bearing-blocks formerly employed at the inner end of the bore are entirely dispensed with, and the binding of the bar thus pre-I vented. As the bore B and bar D are formed at thesame operation, all waste from the auger working out of center is avoided, and my imlproved"curtain-roller produced at considerably less expense than the .rollers heretofore in use. l

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. As a new article of manufacture, a wooden curtain-roller provided with the bore B, and having the axial bar D, made in one piece with the roller, substantially as and for the-purpose hereinbefore set forth. A i

2. The combination, with the hollow roller A, of the bar D, formedtherewith, so as to rotate with the roller, stationary bearingE e, in

The bar D being formed in which the outer end of the bar lD rotates, and y spiral spring c, secured with its ends, respectively, to the roller A and bearingE, substantially as and for the purpose hereinbefore set forth.

CHARLES H. MILLER.

4VVitnesSes: V i

GEoRGE H. SYKES, EDWARD WILHELM. 

